I think the DE kinda worked.. approx 20 hrs after adding to the filter,.. there is some imporvement in the cloudiness. How long would it take to filter out the residue.. with DE in the filter?

By the way.. I checked the HARDNESS with the other readings this morning:

FC - 6
CC - 0
pH - 7.5
Alk - 90
CYA - 50
CAL: 50
temp - 83